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- /*
- * Copyright (c) 1988 University of Utah.
- * Copyright (c) 1982, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Systems Programming Group of the University of Utah Computer
- * Science Department.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: Utah $Hdr: cpu.h 1.16 91/03/25$
- *
- * @(#)cpu.h 8.4 (Berkeley) 1/5/94
- */
-
- /*
- * Exported definitions unique to hp300/68k cpu support.
- */
-
- /*
- * definitions of cpu-dependent requirements
- * referenced in generic code
- */
- #define COPY_SIGCODE /* copy sigcode above user stack in exec */
-
- #define cpu_exec(p) /* nothing */
- #define cpu_swapin(p) /* nothing */
- #define cpu_wait(p) /* nothing */
- #define cpu_setstack(p, ap) (p)->p_md.md_regs[SP] = ap
- #define cpu_set_init_frame(p, fp) (p)->p_md.md_regs = fp
-
- /*
- * Arguments to hardclock and gatherstats encapsulate the previous
- * machine state in an opaque clockframe. One the hp300, we use
- * what the hardware pushes on an interrupt (frame format 0).
- */
- struct clockframe {
- u_short sr; /* sr at time of interrupt */
- u_long pc; /* pc at time of interrupt */
- u_short vo; /* vector offset (4-word frame) */
- };
-
- #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
- #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0)
- #define CLKF_PC(framep) ((framep)->pc)
- #if 0
- /* We would like to do it this way... */
- #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
- #else
- /* but until we start using PSL_M, we have to do this instead */
- #define CLKF_INTR(framep) (0) /* XXX */
- #endif
-
-
- /*
- * Preempt the current process if in interrupt from user mode,
- * or after the current trap/syscall if in system mode.
- */
- #define need_resched() { want_resched++; aston(); }
-
- /*
- * Give a profiling tick to the current process when the user profiling
- * buffer pages are invalid. On the hp300, request an ast to send us
- * through trap, marking the proc as needing a profiling tick.
- */
- #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
-
- /*
- * Notify the current process (p) that it has a signal pending,
- * process as soon as possible.
- */
- #define signotify(p) aston()
-
- #define aston() (astpending++)
-
- int astpending; /* need to trap before returning to user mode */
- int want_resched; /* resched() was called */
-
-
- /*
- * simulated software interrupt register
- */
- extern unsigned char ssir;
-
- #define SIR_NET 0x1
- #define SIR_CLOCK 0x2
-
- #define siroff(x) ssir &= ~(x)
- #define setsoftnet() ssir |= SIR_NET
- #define setsoftclock() ssir |= SIR_CLOCK
-
- /*
- * CTL_MACHDEP definitions.
- */
- #define CPU_CONSDEV 1 /* dev_t: console terminal device */
- #define CPU_MAXID 2 /* number of valid machdep ids */
-
- #define CTL_MACHDEP_NAMES { \
- { 0, 0 }, \
- { "console_device", CTLTYPE_STRUCT }, \
- }
-
- /*
- * The rest of this should probably be moved to ../hp300/hp300cpu.h,
- * although some of it could probably be put into generic 68k headers.
- */
-
- /* values for machineid */
- #define HP_320 0 /* 16Mhz 68020+HP MMU+16K external cache */
- #define HP_330 1 /* 16Mhz 68020+68851 MMU */
- #define HP_350 2 /* 25Mhz 68020+HP MMU+32K external cache */
- #define HP_360 3 /* 25Mhz 68030 */
- #define HP_370 4 /* 33Mhz 68030+64K external cache */
- #define HP_340 5 /* 16Mhz 68030 */
- #define HP_375 6 /* 50Mhz 68030+32K external cache */
- #define HP_380 7 /* 25Mhz 68040 */
- #define HP_433 8 /* 33Mhz 68040 */
-
- /* values for mmutype (assigned for quick testing) */
- #define MMU_68040 -2 /* 68040 on-chip MMU */
- #define MMU_68030 -1 /* 68030 on-chip subset of 68851 */
- #define MMU_HP 0 /* HP proprietary */
- #define MMU_68851 1 /* Motorola 68851 */
-
- /* values for ectype */
- #define EC_PHYS -1 /* external physical address cache */
- #define EC_NONE 0 /* no external cache */
- #define EC_VIRT 1 /* external virtual address cache */
-
- /* values for cpuspeed (not really related to clock speed due to caches) */
- #define MHZ_8 1
- #define MHZ_16 2
- #define MHZ_25 3
- #define MHZ_33 4
- #define MHZ_50 6
-
- #ifdef KERNEL
- extern int machineid, mmutype, ectype;
- extern char *intiobase, *intiolimit;
-
- /* what is this supposed to do? i.e. how is it different than startrtclock? */
- #define enablertclock()
-
- #endif
-
- /* physical memory sections */
- #define ROMBASE (0x00000000)
- #define INTIOBASE (0x00400000)
- #define INTIOTOP (0x00600000)
- #define EXTIOBASE (0x00600000)
- #define EXTIOTOP (0x20000000)
- #define MAXADDR (0xFFFFF000)
-
- /*
- * Internal IO space:
- *
- * Ranges from 0x400000 to 0x600000 (IIOMAPSIZE).
- *
- * Internal IO space is mapped in the kernel from ``intiobase'' to
- * ``intiolimit'' (defined in locore.s). Since it is always mapped,
- * conversion between physical and kernel virtual addresses is easy.
- */
- #define ISIIOVA(va) \
- ((char *)(va) >= intiobase && (char *)(va) < intiolimit)
- #define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase)
- #define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE)
- #define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
- #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 2mb */
-
- /*
- * External IO space:
- *
- * DIO ranges from select codes 0-63 at physical addresses given by:
- * 0x600000 + (sc - 32) * 0x10000
- * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
- * their control space and the remaining areas, [0x200000-0x400000) and
- * [0x800000-0x1000000), are for additional space required by a card;
- * e.g. a display framebuffer.
- *
- * DIO-II ranges from select codes 132-255 at physical addresses given by:
- * 0x1000000 + (sc - 132) * 0x400000
- * The address range of DIO-II space is thus [0x1000000-0x20000000).
- *
- * DIO/DIO-II space is too large to map in its entirety, instead devices
- * are mapped into kernel virtual address space allocated from a range
- * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
- */
- #define DIOBASE (0x600000)
- #define DIOTOP (0x1000000)
- #define DIOCSIZE (0x10000)
- #define DIOIIBASE (0x01000000)
- #define DIOIITOP (0x20000000)
- #define DIOIICSIZE (0x00400000)
-
- /*
- * HP MMU
- */
- #define MMUBASE IIOPOFF(0x5F4000)
- #define MMUSSTP 0x0
- #define MMUUSTP 0x4
- #define MMUTBINVAL 0x8
- #define MMUSTAT 0xC
- #define MMUCMD MMUSTAT
-
- #define MMU_UMEN 0x0001 /* enable user mapping */
- #define MMU_SMEN 0x0002 /* enable supervisor mapping */
- #define MMU_CEN 0x0004 /* enable data cache */
- #define MMU_BERR 0x0008 /* bus error */
- #define MMU_IEN 0x0020 /* enable instruction cache */
- #define MMU_FPE 0x0040 /* enable 68881 FP coprocessor */
- #define MMU_WPF 0x2000 /* write protect fault */
- #define MMU_PF 0x4000 /* page fault */
- #define MMU_PTF 0x8000 /* page table fault */
-
- #define MMU_FAULT (MMU_PTF|MMU_PF|MMU_WPF|MMU_BERR)
- #define MMU_ENAB (MMU_UMEN|MMU_SMEN|MMU_IEN|MMU_FPE)
-
- /*
- * 68851 and 68030 MMU
- */
- #define PMMU_LVLMASK 0x0007
- #define PMMU_INV 0x0400
- #define PMMU_WP 0x0800
- #define PMMU_ALV 0x1000
- #define PMMU_SO 0x2000
- #define PMMU_LV 0x4000
- #define PMMU_BE 0x8000
- #define PMMU_FAULT (PMMU_WP|PMMU_INV)
-
- /*
- * 68040 MMU
- */
- #define MMU4_RES 0x001
- #define MMU4_TTR 0x002
- #define MMU4_WP 0x004
- #define MMU4_MOD 0x010
- #define MMU4_CMMASK 0x060
- #define MMU4_SUP 0x080
- #define MMU4_U0 0x100
- #define MMU4_U1 0x200
- #define MMU4_GLB 0x400
- #define MMU4_BE 0x800
-
- /* 680X0 function codes */
- #define FC_USERD 1 /* user data space */
- #define FC_USERP 2 /* user program space */
- #define FC_PURGE 3 /* HPMMU: clear TLB entries */
- #define FC_SUPERD 5 /* supervisor data space */
- #define FC_SUPERP 6 /* supervisor program space */
- #define FC_CPU 7 /* CPU space */
-
- /* fields in the 68020 cache control register */
- #define IC_ENABLE 0x0001 /* enable instruction cache */
- #define IC_FREEZE 0x0002 /* freeze instruction cache */
- #define IC_CE 0x0004 /* clear instruction cache entry */
- #define IC_CLR 0x0008 /* clear entire instruction cache */
-
- /* additional fields in the 68030 cache control register */
- #define IC_BE 0x0010 /* instruction burst enable */
- #define DC_ENABLE 0x0100 /* data cache enable */
- #define DC_FREEZE 0x0200 /* data cache freeze */
- #define DC_CE 0x0400 /* clear data cache entry */
- #define DC_CLR 0x0800 /* clear entire data cache */
- #define DC_BE 0x1000 /* data burst enable */
- #define DC_WA 0x2000 /* write allocate */
-
- #define CACHE_ON (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
- #define CACHE_OFF (DC_CLR|IC_CLR)
- #define CACHE_CLR (CACHE_ON)
- #define IC_CLEAR (DC_WA|DC_BE|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
- #define DC_CLEAR (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_ENABLE)
-
- /* 68040 cache control register */
- #define IC4_ENABLE 0x8000 /* instruction cache enable bit */
- #define DC4_ENABLE 0x80000000 /* data cache enable bit */
-
- #define CACHE4_ON (IC4_ENABLE|DC4_ENABLE)
- #define CACHE4_OFF (0)
-